<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
      <div>
        <el-row :gutter='20'>
          <el-col :span="7">
            <!-- 搜索与添加区域 -->
            <el-input placeholder="请输入内容" clearable v-model="queryInfo.query" @clear="getUserList" class="input-with-select">
              <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
              <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
          </el-col>
        </el-row>

        <!-- 用户列表区 -->
        <el-table :data="userlist" border stripe>
            <el-tableColumn type="index" label="#"></el-tableColumn>
            <el-tableColumn label="姓名" prop="username"></el-tableColumn>
            <el-tableColumn label="邮箱" prop="email"></el-tableColumn>
            <el-tableColumn label="电话" prop="mobile"></el-tableColumn>
            <el-tableColumn label="角色" prop="role_name"></el-tableColumn>
            <el-tableColumn label="状态">
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
                </template>
            </el-tableColumn>
            <el-tableColumn label="操作" width="180px">
                <template slot-scope="scope">
                    <!-- 修改按钮 -->
                    <el-tooltip effect="dark" :enterable="false" content="修改" placement="top">
                        <el-button type="primary" @click="showEditDialog(scope.row.id)" icon="el-icon-edit" size="mini"></el-button>
                    </el-tooltip>
                    <!-- 删除按钮 -->
                    <el-tooltip effect="dark" :enterable="false" content="删除" placement="top">
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    </el-tooltip>
                    <!-- 分配角色 -->
                    <el-tooltip effect="dark" :enterable="false" content="分配角色" placement="top">
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-tableColumn>
        </el-table>
        <!-- 分页区域 -->
                <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
      </div>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
    title="添加用户"
    :visible.sync="addDialogVisible"
    width="50%"
    @close="addDialogClose">
        <!-- 内容主体区 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser" >确 定</el-button>
            <!--  @close="addDialogClose"-->
        </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
    title="修改用户"
    :visible.sync="editDialogVisible"
    width="50%"
    @close="editDialogClose">
        <!-- 内容主体区 -->
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名" >
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserIfo" >确 定</el-button>
        </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog
    title="分配角色"
    :visible.sync="setRoleDialogVisible"
    width="50%"
    @close="setRoleDialogClosed">
    <div>
      <p>当前的用户：{{userInfo.username}}</p>
      <p>当前的角色：{{userInfo.role_name}}</p>
      <p>
        分配新角色：
        <el-select v-model="selecyedRoleId" placeholder="请选择">
          <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
        </el-select>
      </p>
    </div>
    <span slot="footer" class="dialog-footer">
      <el-button @click="setRoleDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
  </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
    // 获取用户列表的参数
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示的多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制对话框的显示和隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 10, message: '密码的长度在6~15位', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' }
          // { max: 10, message: '密码的长度在13位', trigger: blur }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到用户的信息对象
      editForm: {
        email: '',
        mobile: ''
      },
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' }
          // { type: 'mobile', message: '密码的长度在13位', trigger: blur }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色id
      selecyedRoleId: ''

    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_status = !userInfo.mg_status
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          // 红色提示框
          return this.$message.error('添加用户失败')
        }
        // 绿色提示框
        this.addDialogVisible = false
        this.getUserList()
        this.$message.success('添加用户成功')
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClose () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserIfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起修改用户的网络请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          // 红色提示框
          return this.$message.error('更新用户失败')
        }
        // 绿色提示框
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户成功')
      })
    },
    // 根据id删除对应的用户信息
    async removeUserById (id) {
      // 弹框询问
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 如果用户确定删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回至为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        // 取消
        return this.$message.info('已经取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    // 展示分配角色对话框
    async setRole (userInfo) {
      this.userInfo = userInfo

      // 在展开之前获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }

      this.rolesList = res.data

      // 展开列表
      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo () {
      if (!this.selecyedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selecyedRoleId })

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selecyedRoleId = ''
      this.userInfo = {}
    }

  }
}

</script>

<style lang="less" scoped>
</style>
